| Grade : | 08GDNFL ( 08ГДНФЛ ) |
| Classification : | Casting alloy steel for general purposes |
| Equivalent grades: | Is absent |
Chemical composition in % for grade 08GDNFL ( 08ГДНФЛ )
| C | Si | Mn | Ni | S | P | V | Cu |
| max 0.1 | 0.15 - 0.4 | 0.6 - 1 | 1.15 - 1.55 | max 0.035 | max 0.035 | max 0.1 | 0.8 - 1.2 |
Temperature of critical points for grade 08GDNFL ( 08ГДНФЛ ).
| Ac1 = 690 , Ac3(Acm) = 873 , Ar3(Arcm) = 730 , Ar1 = 585 |
Mechanical properties under Т=20oС for grade 08GDNFL ( 08ГДНФЛ )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Casting, GOST 977-88 | to 100 | 441 | 343 | 18 | 30 | 491 | Normalizing 930 - 970oC,Drawing 590 - 650oC, |
| Brinell hardness for 08GDNFL ( 08ГДНФЛ ) , | HB 10 -1 = 126 - 178 MPa |
Technological properties for grade 08GDNFL ( 08ГДНФЛ )
| Weldability: | without limitations. |
| Flakes : | not predisposed |
| Temper brittleness: | not predisposed |
Technological properties of the material 08GDNFL ( 08ГДНФЛ ) .
| Linear shrinkage : | 2.1 % |
Heat treatment of the material 08GDNFL ( 08ГДНФЛ )
| Normalizing 920 - 950 ° C, or Normalizing 920 - 950 ° C, Tempering 590 - 650 ° C |
Physical properties for grade 08GDNFL ( 08ГДНФЛ )
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
| Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
| 20 | 2.12 | 39 | 7850 | 223 | ||
| 100 | 2.06 | 10.3 | 39 | 483 | 275 | |
| 200 | 2.01 | 11.3 | 39 | 500 | 367 | |
| 300 | 1.89 | 12 | 39 | 517 | 487 | |
| 400 | 1.77 | 13 | 37 | 529 | 607 | |
| 500 | 1.67 | 13.6 | 35 | 554 | 753 | |
| 600 | 1.55 | 14.1 | 32 | 571 | 870 | |
| 700 | 1.37 | 14.4 | 30 | 613 | 1065 | |
| 800 | 1.27 | 12.5 | 28 | 697 | 1125 | |
| 900 | 13 | 27 | 693 | 1150 | ||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Types of delivery of grade 08GDNFL ( 08ГДНФЛ )
| B82 - Steel Castings |
Specification :
| Mechanical properties : | |
| sв | - Tensile strength , [MPa] |
| sT | - Yield stress, [MPa] |
| d5 | - Specific elongation at fracture , [ % ] |
| y | - Reduction of area , [ % ] |
| KCU | - Impact strength , [ kJ / m2] |
| HB | - Brinell hardness , [MPa] |
Physical properties : | |
| T | - Test temperature , [Grade] |
| E | - Young modulus , [MPa] |
| a | - Coefficient of linear expansion (range 20o - T ) , [1/Grade] |
| l | - Termal (heat) condition coefficient , [Watt/(m·Grade)] |
| r | - Density , [kg/m3] |
| C | - Specific heat ( range 20o - T ), [J/(kg·Grade)] |
| R | - Electrical resistance , [Ohm·m] |
Weldability : | |
| without limitations | - welding is done without heating and subsequent heat treeting |
| limited weldability | - welding is possible under heating up to 100-120 grade and subsequent heat treeting |
| hard weldability | - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing |
08GDNFL ( 08ГДНФЛ ) - Casting alloy steel for general purposes: chemical composition, mechanical and physical properties, hardness
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